feat: 完善课程订阅

packages/server/prisma/schema.prisma

@@ -38,6 +38,7 @@ enum TimeSlotSource {
 }
 
 enum BookingStatus {
+  PENDING_CONFIRMATION
   CONFIRMED
   CANCELLED
   COMPLETED
@@ -152,8 +153,11 @@ model Booking {
   userId       String        @map("user_id")
   timeSlotId   String        @map("time_slot_id")
   membershipId String        @map("membership_id")
-  status       BookingStatus @default(CONFIRMED)
+  status       BookingStatus @default(PENDING_CONFIRMATION)
   cancelledAt  DateTime?     @map("cancelled_at")
+  confirmedAt  DateTime?     @map("confirmed_at")
+  completedAt  DateTime?     @map("completed_at")
+  operatorId   String?       @map("operator_id")
   createdAt    DateTime      @default(now()) @map("created_at")
   updatedAt    DateTime      @updatedAt @map("updated_at")
 
@@ -161,12 +165,29 @@ model Booking {
   timeSlot   TimeSlot   @relation(fields: [timeSlotId], references: [id])
   membership Membership @relation(fields: [membershipId], references: [id])
 
+  statusHistory BookingStatusHistory[]
+
   @@unique([userId, timeSlotId])
   @@index([userId])
   @@index([status])
   @@map("bookings")
 }
 
+model BookingStatusHistory {
+  id         String   @id @default(uuid())
+  bookingId  String   @map("booking_id")
+  fromStatus String?  @map("from_status")
+  toStatus   String   @map("to_status")
+  operatorId String?  @map("operator_id")
+  remark     String?
+  createdAt  DateTime @default(now()) @map("created_at")
+
+  booking Booking @relation(fields: [bookingId], references: [id])
+
+  @@index([bookingId])
+  @@map("booking_status_history")
+}
+
 model Order {
   id              String      @id @default(uuid())
   userId          String      @map("user_id")